Curling iron



FIG. 1 is a right side elevational view of a curling iron showing my new design, the side opposite being a mirror image of the side shown;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear end elevational view thereof;

FIG. 4 is a front end elevational view thereof; and,

FIG. 5 is a bottom plan view thereof.

The cord portion of the design is shown partially broken away in the various views to indicate indeterminate length. 

The ornamental design for a curling iron, as shown and described. 